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Electronics and Communication Engineering - Materials and Components - Discussion

Discussion Forum : Materials and Components - Section 1 (Q.No. 19)
Materials and Components
19.
If a sample of germanium and a sample of silicon have the same impurity density and are kept at room temperature
both will have equal value of resistivity
both will have equal negative resistivity
resistivity of germanium will be higher than that of silicon
resistivity of silicon will be higher than that of germanium
Answer: Option
Explanation:

Resistivity of silicon is more than that of germanium.

Discussion:
2 comments Page 1 of 1.
Danielle said:   8 years ago
Just compare their voltage drops.

V(Si) > V(Ge). Knowing that there is direct proportionality between voltage and resistance, therefore, R(Si) > R(Ge).
Naim Ahmad said:   1 decade ago
Minority carrier in Ge > Si.
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